Surveys

Underwater operations 201630Z aug to 122359Z sep by vessel towing 50 meter long equipment with submersible…

Celtic Sea · HYDROLANT 2045/15

issued: 2015-08-20 14:18Z
status: cancelled 2015-09-13 00:59Z (archive)
self-cancels: 2015-09-13 00:59Z
authority: NAVAREA I 242/15 201120Z AUG 15.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

CELTIC SEA.
DNC 19, DNC 20.
1. UNDERWATER OPERATIONS 201630Z AUG TO 122359Z SEP
   BY VESSEL TOWING 50 METER LONG EQUIPMENT WITH
   SUBMERSIBLE IN AREA BETWEEN
   51-15N 50-50N AND 006-50W 006-10W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 130059Z SEP 15.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2015-08-20 16:30Z	2015-09-12 23:59Z	—	559 h 29

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

84 survey operations in force · see all

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.